Matrix-block.



I. B. PRINGLE.

vMATRIX BLOCK. v

APPLICATION FILED Aue. I. ISIS4 1,297,78 l. Patmed Mar. I5, Ism.

2 SHEETS-SHEET l.

W @Iyj @maj l. B. PHiNGLE'.

MATRIX BLOCK. APPLrcAHoN FILED AUGJ. ma.

SVYS v Patented Mar. 1S, 19M

Z SHEETS-SHEET 2.

D; m ,o w O nin [as .afirmar euries.

JAMES BROVN PRINGLL, OF llIONTEEAL, QUEBEC, CANADA..

MATRIX-BLOGI nearest..

Specification of Letters Fatent. Paggnjed M313 18, 1919 Application atleti August 7, i918. Serial No. 248,799.

certain new and useful Improvements inv Matrix-Blocks, and do hereby declare the following to be a full, clear, and exact description of same.

This invention relates to matrix blocks for use in connection kwith a machine wherein a slug is cast in a slotted mold against a matrix, the block, as distinguished from the series of individual matrices used to produce a slug for a line of type hitherto, consisting of a unitary block with a longitudinal groove cut in one side thereof for the reception of a strip or plate so faced as to constitute the matrix proper and 1oeing utilized more particularly for thel production spe cially of slugs for the printing ofrules, borders, dashes `and the like'.

For a period the matrix plates were made [if a width to ll the groove in the block but as the use of such single matrix plate necessitated the manufacture of n new plate for each new slug face to be produced it was proposed to utilize a series olf narrower matrix plates so that while a single iormative plate could be used in conjunction' with iiller or spacer plates having blanl-z faces, two or more formative matrix plates forming a composite matrixlplate could be used in conjunction to produce a slug faced with a combination ofthe same or ditte-rent rules or border fomnations without the necessity of manufacturing a new matrix plate, the units ofthe series oi. matrix plates being capable of repeated usein the various coinhi nations required.

. lt has been found, however,that a unitary hlock is not suitable for use in conjunction with the above mentioned series of matrix 'plates owing to the fact that to insert the latter in the groove of the block a certain freedom or clearance between them and the walls of the groove is necessary. Therefore as the lolock is of unitary formation ,and the width of the groove consequently fixed a loose association of `the plates with each other and with the walls of the groove resuits and spaces are established into which the molten metal flows during the casting operation and spoils the face of the slug.

lorts have been made to overcome the mentioned disadvantageby the use of set screws forv tightening the plates in the groove but these set screws do not provide an even bearing throughout the length of the plates and are therefore unsatisfactory for such reason and also because they retf'luire 'the use oi' a separate tool to set them and furthermore present, among other dis- 'advantages apparent to those skilled in the art, the necessity for the matrix plates being held in position until engaged by the screws.

The object, therefore. of this invention is I to provide a new and improved matrix block and especially one adapted to overcome the deiiciencies oi matrix blocks of prior design for use with composite matrix plates.

`For full comprehension, however, of my invention reference should he had to they ace Y companying drawings forming va part of this specification, in which similar reference L characters indicate the vsame parts and wherein :w t

Figure l is a perspective view of the matrix block.

Fig. 2 illustrates certain of the series of matrix plates;

Fig. 3 4is a perspective of the blmk and plates assembled;

Fig. .4 is a transverse section of the block and portions of the mold and elevator;

Fig. 5 is a. perspective view of a modified form of matrix block showing its adaptability for use in connection with matrices of slide form. I

Fig. 6 is a perspective view of the same form oi matrix block as'shown in Fig. 5 but with a single filler block adaptingy it forearrving large-type-letter matrices.

Fig. 7 presentsside and end views of a retainer plate for use with slide matrices.

Fig. 8 presents side and end views of a modilied form of retainer plate, and

Fig. 9 presents side and end viewsV of a filler hlocll: 'For use with slide matrices.

The matrix hlocli' as shown in the accompan'ving drawings instead of being of a unitary character and grooved as formerly, is constructed in two main portions or blocks 2 and 55 adapted to he spaced apart to permit the ready insertion between them of what'z'I spacer plates, as shown in Figs. 3 and 4, or

et another time he louilt `up or composedvof a filler block` retaining strips and slide, as

shown in Fi 5; or, composed of a filler screw threaded ends which may be passed block and sli e only, as shown in Fig. 6; the through holes 16 in block portion 3, and block portions 2 and 3, after insertion of the corresponding registering holes 17 in the matrix forming element, being forced tomatrix plates and be screwed into screw ward each other to tightly hold the inserted threaded holes 18 in the other block por- 70 parts in place. tion 2. y

The block portion 2 is provided with con- On reference to Figs. 5 and 6 it will be .w necting'posts 5 which may be in the form ofy noticed that the block portion 2 instead of screivs vpassed through and projecting from being substantially deep in cross section, such block portion 2 and 'being screw-threadscarfed to provide the necessary shoulders 75 ed at their outer ends, while the block porand having the usual deep and wide Vs tion 3 has holes 6 therethrough enabling it sha-pech operating groove in it's top side, is to be slidably mounted upon the connecting of a comparatively shallow oblong cross secposts, and thumb nuts 7 or the like are tion providedf with a correspondingly rescrewed upon the outer ends of the posts and stricted V-shaped operating groove, and has 80 bear against the outer side ot block por- La dove-tail groove 20 in its underside near tion 3. y the front edge extending the full length of As shown in Figs. 1, 3 and Jr the opposite the block portion as indicated by dotted side faces of the block portions 2 and 3 are lines. y

flush with each other and correspondingly This. shallow form of block portion, the 85" soarfed at 8 to provide shoulders 8a for enfront and back side edges of which consti. gagement with the mold 9 as will be ap tute t-he shoulders requisite for operation in parent from Fig. 4. The opposing faces -11 the machine inuwhch it is used, results in and 12 respectively of the block portions 2 greater working space between the block and 3 are preferably flat-'and the matrix 'portions and consequently a greater variety 90 plates 4 have open ended slots 14 formed in of matrices can 'be used while with a doveone edge 13 to ft over or straddle the posts tail groove 21 in the block portion 3 corre- 5, the dimensions of the slots being such as sponding to that 2O in block'portion 2, the to position the plates with their opposite comparatively large bevel edged sli ing letcharacter-bearing edgesl 15 in correct rela.- ter matrices 22 shown in Fig. 6 can be used. 95- tion to the flush faces ofthe block portions lVhen as shown in Figs. 5 and 6 slide' and lprevent displacement of the plates lonmatrices are used the space between the gitudinally of the block. 4block portions can Ibe filled with either the The 'series of plates 4, certain of which single large bearer, or filler, block 23 separe shownin the drawings to indicate their ara-tely shown in lFig. 9'and in place in Fig. 100 employment, can be made to include all for- 6, or, as in Fig. 5 with a bearer block 24, mationslikely to be required and while a and two retainer plates 25, (one of which single plate may be used in conjunctionvvith is illustrated in Fig. 7) having the turned Lthe block portions, a number also can be over edges 26 to form With the block. 24

used together to secure a desired combinaguideways fpr a thin narrow matrix slide, 10g tion, while spacer plates which when in powhich may 1f deslred be of papler mch,

`sition have their workinfr faces flush with the remaining space being filled by a filler scarfed surfaces of tie block portions,- plate 27.

can be employed a-s fillers when necessary. For use with narrow matrix slides having The block portions 2 and 3 are spread sufbeveled edgesfretainer plates 28 .g'rooved as 110 ficiently far apart prior to the insertion of at 29 may be used. p the part or parts of the matrix forming ele- As a result of the even-andtight associamentto enable the latter to be readily tion of the matrix forming element with dropped over the posts and when such parts the block: and the facility with which the are dropped into position the clearance be- `parts can 'be dropped into position,v matrix 115 tween them and the block portion is taken plates made of cardboard or other 1nexpen, l up by turning the thumb nuts and so'movsive and readily worked up materialcan be, ing portion 3 toward portion 2 to clamp employed." y the plates between them. The clamping ae- Whatl claim is as follows:

tion is evenly transmitted 'by block portion 1. Ina matrix holder for use in castin 120 3 throughout the length of the block and printing slugs, the combination of two bloc such even tightening of the inserted parts portions, posts' permanently carried by and avoids spaces or ycracks across the matrix projecting from one block portion and passwhich if present would cause a faulty casting thr'ou h and beyond holes in the other ing when the block is brought into casting block portion, the block portions presentingllZ position as shown in Fig. 4. opposing faces of' like formation t .'roughout As a safeguard to prevent any possibility their length and adapted to be spaced apart `of the matrix plates or other inserted parts to permit the ready insertionof a .matrixY-AA being accidentally displaced suitable locking forming element between them, "and means means are provided s'uch as pins 15f having on the ends of the posts for tightening the 13o block portions upon and holding the matrix `ijtorming element.

2. In a matrix holder Jfor use in casting' printing slugs. the combination of two block I'Qp'ortions adapted to be spaced' apart to pering opposing faces adapted to bear upon said element; a plurality of connections be tween the block portions; a matrix formino` element formed with a hole therethrough and slots in one of its edges. and a retaining pin passed through one, block portion through the hole in said element and connected with the other block portion.v

4-, In a matrix holder t'or use, in casting' printing slugs. the combination ot two block portions, posts permanently carried by and projecting from one block portion and passing through and beyond holes in the, other block portion., the block portions presenting opposing` faces ot like formation throughout their length and adapted to; be spaced apart to permit the ready insertion ot a matrix forming element between them; a composite matrix forming element inserted lbetween the block portions; and means on the ends ot the posts for moving the block portions toward each other and holding same in closed position upon the matrix forming element.

5. ln a matrix holder for use in casting printing slugs`r the combination of two block portions adapted to be spaced apart to permit. the readyy insertion of a composite matrix forming element between them; a compositie matrix forming element comprising a filler block. retaining` strips and a matrix slide inserted between the two block portions; and means for moving the blot-k portions toward each other and holding same lin closed position upon the. matrix lForming element.

6. lln a matrix holder for -us:l in casting printing slugs., the combination of two block portions adapted to he spaced apart to permit the ready insertion of an interchangeable composite matrix forming elenaint between'them; a eon'iposite matrix forming elei'nent comprising a filler block. retaining strips and a matrix slide` such element having holes therethrough and slots in one edge. and inserted between the block portions; f plurality of connections between the block portions for moving them town rd each other, and retaining pins extending between the block portions and passing through the holes in the matrix forming clement.

l'. ln combination a matrix holder for use in casting printingl slugs. comprising two block portions adapted to be lspaced apart to permit lthe ready insertion oimatrix torming elements edge-on between them aml to be forced toward cach other to tightly hold said elements in place. a plurality ot' connections between the block portions. and matrix tornxing elements tormed with slotsy in one edge to register with and m'commodate said connections. said slotsy being of such a depth with relation to tlu` opposite character-bearing edge of the matrix Forming elementthat the contacting ot the bottoms thereof with-said connections will insure the proper jiositioning ot such characterdimiring edge with relation to the block portions for the casting operation.

8. A matrix holder. for use. in casting` printingF slugs, comp 'ising two bloclr'portions adapted to be spaced apart to permit 'the ready insertion of matrix forming elements between them and presenting opposing bearing faces between which the matrix forming elements are to be held. a plurality of posts extending from the bearing 'face of one block portion and having their ends screw-threaded. the other block portion pr0- vided with holes through which the screwthreaded ends of the posts may pass. and thumb nuts on such screw threaded ends lso for movingr the last. mentioned block portion toward the other block portion.

9. In means for use in Casting printing slugs, the. con'ibination with a matrix holder comprising two block portions adapted to be spaced apart and presenting opposing bearing faces between which the matrix elements are to be held, a plurality of posts extending -trom the bearing tace. of one block portion and having their ends screw-threaded. the other block portion provided with holes through which the screw-threaded ends of the posts may pass and thumb nuts on such screw threaded ends for moving the last mentioned block portion toward the other block portiom of a matrix element adapted to bc held between the bearing faces of the block portions one edge. ot the element presenting the, desired character tormation to be cast and the. opposite edge being slotted t'rom such edgel inward at points to register with and accounnodate the postsl extendingbetween such block portions.

10. In a matrix holder tor use in casting printing slugs, the combination ot two block portions adapt-ed to be spaced apart to permit the ready insertion ot` a matrix forming element between them, a pluralityv ot posts projecting from one block portion and the other block portion presenting holes for the passage freely therethrough of the ends of said posts, means for positioning and retaining ay matrix forming element in place, and means forl tightening the block portions upon and holding the matrix Vforming element.

11. In a matrix holderfor use in casting printing slugs, the combination oftwo block portions adapted to be spaced apart to per mit the ready insertion ofa matrix forming' element between them, a plurality of posts Y therethrough of havingsrew-threaded ends projecting from one blo`k`port`ion and the other block portion presentingfolesior the passage freely the endsobfsaid posts, pins for positioning and retainingamatrix forming element in place and thumb nuts the screw-threaded ends of the posts for tighe ing the block portions the matrix forming element.

JAMES BROWN PRINGLE.

upon and holding\ 

